Location: Cobb (1972, MF-413), loc. 69, on the tailings along Amy Creek. The placer-mined ground is located near the mouth of Amy Creek, approximately 3 miles north of Amy Dome.

Geology: Gold has been found in in the lower 3 feet of gravel and on bedrock (Overbeck, 1920, p. 181; Mertie, 1918). Bedrock is mainly chert but there is some granite at the mouth of the second tributary above Livengood Creek. Basalt porphyry is the bedrock at the head of the creek; there is limestone and argillite near the mouth (Mertie, 1918). Bench gravels were mined east of the creek in 1918, to a depth of 25 to 100 feet, above a pay streak of 40 to 60 feet wide (Overbeck, 1920, p. 181). Concentrates of these gravels contain magnetite, limonite, hematite, chromite and pyromorphite. Joesting (1942, ATDM Pamph. 1) reported that the chromite and chrome spinel in placers was probably derived from serpentine in Middle Devonian basic volcanic rocks. Mining occurred in 1916, 1922, 1924, 1926, 1928-1939, 1967-1968 (Cobb, 1976; OFR 76-633, p. 9).

Workings: Shafts on different claims range from 25 to 100 feet deep.

Commodities (Major) - Au; (Minor) - Cr, Sb

Development Status: Yes; small

Deposit Model: Placer gold deposit (Cox and Singer, 1986; model 39a).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Antimony

ⓘ Chromium

ⓘ Gold

Mineral List

ⓘ Chromite

ⓘ Native Gold

ⓘ Stibnite

3 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

ⓘ Native Gold

Formula: Au

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

ⓘ Stibnite

Formula: Sb₂S₃

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Gold	1.AA.05	Au
Group 2 - Sulphides and Sulfosalts
ⓘ	Stibnite	2.DB.05	Sb₂S₃
Group 4 - Oxides and Hydroxides
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄

List of minerals for each chemical element

O	Oxygen
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
S	Sulfur
S	ⓘ Stibnite	Sb₂S₃
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Sb	Antimony
Sb	ⓘ Stibnite	Sb₂S₃
Au	Gold
Au	ⓘ Native Gold	Au

Other Databases

Link to USGS - Alaska:	LG021
Link to USGS MRDS:	10002984

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Arctic AlaskaPassive Margin
Wickersham DomainDomain

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

USGS MRDS ID #A015487.

Smith, S.S. (1917), The mining industry in the territory of Alaska during the calendar year 1916: U.S. Bureau of Mines Bulletin 153, 89 pages.

Mertie, J.B., Jr. (1918), Lode mining in the Fairbanks district, Alaska: USGS Bulletin 662-H: 403-424.

Martin, G.C. (1920), The Alaska mining industry in 1918: USGS Bulletin 712-A: 1-52.

Overbeck, R M. (1920), Placer mining in the Tolovana district: USGS Bulletin 712-F: 177-184.

Brooks, A.H., and Capps, S.R. (1924), The Alaska mining industry in 1922: USGS Bulletin 755-A: 1-56.

Smith, P.S. (1926), Mineral industry of Alaska in 1924: USGS Bulletin 783-A: 1-30.

Smith, P.S. (1929), Mineral industry of Alaska in 1926: USGS Bulletin 797: 1-50.

Smith, P.S. (1930), Mineral industry of Alaska in 1928: USGS Bulletin 813-A: 1-72.

Smith, P.S. (1932), Mineral industry of Alaska in 1929, in Smith, P.S., and others Mineral resources of Alaska, report on progress of investigations in 1929: USGS Bulletin 824-A: 1-81.

Smith, P.S. (1933), Mineral industry of Alaska in 1931: USGS Bulletin 844-A: 1-81.

Smith, P.S. (1934), Mineral industry of Alaska in 1933: USGS Bulletin 864-A: 1-94.

Smith, P.S. (1936), Mineral industry of Alaska in 1934: USGS Bulletin 868-A: 1-91.

Smith, P.S. (1937), Mineral industry of Alaska in 1935: USGS Bulletin 880-A: 1-95.

Smith, P.S. (1938), Mineral industry of Alaska in 1936: USGS Bulletin 897-A: 1-107.

(1939) Mineral industry of Alaska in 1937. Bulletin 910a. US Geological Survey doi:10.3133/b910a

Smith, P.S. (1939), Mineral industry of Alaska in 1938: USGS Bulletin 917-A: 1-113.

Smith, P.S. (1941), Mineral industry of Alaska in 1939: USGS Bulletin 926-A: 1-106.

Joesting, H.R. (1942), Strategic mineral occurrences in interior Alaska: Alaska Territorial Department of Mines Pamphlet 1, 46 pages.

Smith, P.S. (1942), Mineral industry of Alaska in 1940: USGS Bulletin 933-A: 1-102.

Foster, R.L. (1968), Descriptions of the Ruth Creek, Lillian Creek, Griffin, Old Smoky, Sunshine No. 2, and Olive Creek lode prospects, Livengood district, Alaska: USGS Open-File Report 68-104, 21 pages.

Cobb, E.H. (1972), Metallic mineral resources map of the Livengood quadrangle, Alaska: USGS Miscellaneous Field Studies Map MF-413, 2 sheets, scale 1:250,000.

Cobb, E.H. (1973), Placer deposits of Alaska: USGS Bulletin 1374, 213 pages.

Cobb, E.H. (1976), Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Livengood quadrangle, Alaska: USGS Open-File Report 76-819, 241 pages.

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